Data recording/reproducing apparatus having plural optical disk

Details Data recording/reproducing apparatus having plural optical disk Data recording/reproducing apparatus having plural optical disk

1990-07-23

1993-09-07

Chin, Tommy

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 54, 369 58, G11B 1722

Patent

active

052435814

ABSTRACT:
An optical disk recording and/or reproducing apparatus realizes a high ability to transmit data by operating a plurality of optical disk drives in parallel. By actuating the data recording or reproducing operation in parallel after these optical disk drives all have completed seeking the target track, deviation in synchronism between these drives can be suppressed below a one track maximum, resulting in the parallel operation of a plurality of optical disk drives using a a small capacity memory. In addition, by transmitting data via a high speed FIFO memory connected to each drive interface and a host interface to a RAM, speedy data transmission using the parallel operation of the plurality of drives is made possible. Further, a plurality of dual port control circuits each successively switches an access to each of a plurality of RAMs to a data transmission from or to a host computer and a data transmission from or to each drive, and the data transmission is executed between one of the RAMs and the host computer and at the same time, the data transmission is executed between each of the RAMs and each drive, thus being capable of transmitting data rapidly using the parallel operation of the plurality of drives.

REFERENCES:
patent: 4562577 (1985-12-01), Glover et al.
patent: 4870643 (1989-09-01), Bultman et al.
patent: 5088081 (1992-02-01), Farr

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